Question

which cell process is commonly associated with breathing?
nitrification
respiration
photosynthesis

Explanation:

Cellular respiration is a process where cells break down glucose and oxygen to produce energy (ATP), carbon dioxide, and water. This is related to breathing as breathing takes in oxygen (used in respiration) and expels carbon dioxide (a product of respiration). Nitrification is a process in the nitrogen cycle (conversion of ammonia to nitrites/nitrates by bacteria). Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce glucose and oxygen (opposite of respiration in terms of gas exchange related to breathing context here).

Answer:

Respiration